CAJ | 학술논문

预埋件的抗剪机理复杂，很难通过试验和理论计算确定预埋件的内力分布和应力大小，通常是在一定的简化与假定基础上，对试验结果统计回归得出预埋件的抗剪计算公式来进行计算。为更精确得到抗剪承载力，建立有限元模型对预埋件的受剪性能进行数值计算，锚板、锚筋与混凝土的相互作用通过三维面-面接触来模拟，并考虑了混凝土对锚筋的粘结作用。通过数值分析得到了剪力作用下预埋件的应力分布和锚筋的截面内力，确定了锚筋反弯点的位置和混凝土的承压范围。有限元计算得出的预埋件抗剪承载力与试验实测值很接近，说明所建立的有限元模型是比较合理的，数值分析的结果可以运用到理论分析和实际工程中。
예매건적항전궤리복잡，흔난통과시험화이론계산학정예매건적내력분포화응력대소，통상시재일정적간화여가정기출상，대시험결과통계회귀득출예매건적항전계산공식래진행계산。위경정학득도항전승재력，건립유한원모형대예매건적수전성능진행수치계산，묘판、묘근여혼응토적상호작용통과삼유면-면접촉래모의，병고필료혼응토대묘근적점결작용。통과수치분석득도료전력작용하예매건적응력분포화묘근적절면내력，학정료묘근반만점적위치화혼응토적승압범위。유한원계산득출적예매건항전승재력여시험실측치흔접근，설명소건립적유한원모형시비교합리적，수치분석적결과가이운용도이론분석화실제공정중。
The mechanism of embedded parts under shear is complex,and it is difficult to get the internal force and stress of embedded parts from test and theoretical calculation.Existing equations on the shear capacity of embedded parts were developed by fitting a theoretical model to the existing test results under a series of appropriate simplifications and assumptions. To improve the existing methods,numerical analyses of embedded part under shear are performed by establishing a finite element model.The interaction between anchor plate and concrete and the interaction between anchor bars and concrete are simulated with the three-dimensional surface-to-surface contact model, considering the bond strength between the anchor bars and the concrete.The stress distribution of embedded parts and the internal force of the anchor bars under shear are obtained by numerical analyses.The position of the inflection point of anchor bars and the pressure range of concrete are confirmed.The shear capacity of the embedded parts predicted by the numerical analyses agrees well with the results of tests,which indicates that the finite element model established is reasonable.The results of numerical analyses can be applied to the theoretical analyses and practical proj ects.